Willaed feank wellman



(No Model.) 2 Sheets-Sheet 1.1

W. F. WELLMAN.

STAVE JOINTING MACHINE. No. 306,885. Patented Oct. 21, 1884.

WITNESSES INVEN TOR 2 Sheets-Sheet 2.

(No Model.)

W. F. WELLMAN.

STAVE JOINTING MAGHINE.

No. 306.885. Patented Oct. 21, 1884.

INVENTOR:

ATTORNEYS.

WITNESSES 7 N. PETERS. Phoio-Lflhognphar, Wuningmn. n. (L

Urtirnn STATES ren't I l l lCE WILLARD FRANK \VELLMAN, OF BELFAST,MAINE, ASSIGNOR OF ONE-HALF TO ELMER SMALL, OF SAME PLACE.

STAVE-JOINTING MACHINE.

SPEGZEICATION forming part of Letters Patent No. 306,885, dated October21, 1884.

- Application filed November 17, 1853.

To aZZ whom it may concern: Be it known that I, WILLARD F. WELL- -MAN.of Belfast, in the county of Waldo and State of Maine, have invented anew and 1m 5 proved Stave-Jointing Machine, of which the following is afull, clear, and exact description. My invention consists of improvedcon trivances of stave-jointing mechanism,whereby it is designed toprovide a simple machine IO to joint both edges of a barrel-stave atonce and make the proper curves for the bulge on stave-s of all widths,so thata barrel made up from all wide staves will be of the same shapeas one made up of all narrow staves, the said 1 machine being automatic,except as tovthe putting on and taking off the staves and the startingof the saw-carriages when the staves are set ready for jointing, all ashereinafter fully describech Reference is to be had to the accompanyingdrawings, forming a part of this specification, in which similar lettersof reference indicate corresponding parts in all the figures.

Figure 1 is aside elevation of my improved 2 stave-jointing machine.Fig. 2 is a plan view without the bed and the stave-holding dogs.

3 is an end elevation with a part of the frame broken out; and Fig.4 isa detail representing one of the saw-carriages and its support in endelevation and on an enlarged scale.

On the top and along the center of the frame, consisting of the uprightsa and horizontal bars 1), connecting said uprights, I arrange the bed 0,whereon the staves d to be jointed are to be secured by the'stationaryknifeedged dogs 0 and the pivoted dog f between two saws g, to bejointedon both edges at the same time. The dogfis fixed on a 0 pivot,7i, to bedetached from the end of the stave to release it when finished, and toshift back to allow the staves to be put in position on the bed. Saiddog has a spring, 2', to pull it forward against the end of the stavesto se- 5 curethem while being jointed; and said dog also has a trip-rod,j,by which one of the sawcarriages k automatically trips the dog andreleases the staves by catching the rod-angle Z,when the said carriageshifts back, and shifting the rod a little just before the carriagecomes to rest at the starting-point.

(No model.)

The saw-carriages 7i; are mounted on the spring guide-rails m,that areconnected at the middle of the sides of the bed-frames a by stud-bolts0, said guide-rails being mounted at the ends on bars p,that havesupport on the ends of the bed-frames a by slots q in bar-s1), and studs8 on frames 02, so that they may shift with relation to the ends of saidframes, and are connected by links t. with the uprights -a, said linksbeing pivoted to the barsp at u,

and connected to the uprights a by curved slots 0 and adjusting bolts12. said slots being arranged to traverse a radial line between pivots aand a shaft. w, whereon the bedframes a are pivoted by arms :0, saidshaft being mounted in bearings y'ofthe uprights a of the frame, andbeing arranged with relation to the bed 0, whereon the staves are placedto be trimmed about as the center of an average barrel is to the stares,so that the saws g, which are radial to said shaft 20, willjoint theedges of wide or narrow staves at the proper bevel, said saws beingshifted toward or from each other, according as the staves are wide ornarrow, by swinging the bed-frames n on the shaft to, for which saidframes are connected by a rod, '2, with a foot-lever, a, adapted to beraised and lowered by the operator with his foot, and having a pawl, b,to engage So a rack, c, on the frame to hold the lever wherever it maybe'set. Each bed-frame alias a lever, a, to be set independently of theother.

The effect of the links if is to cause the bars 19, supporting the endsof the guide-rails m, to 8 swing differentially to the swing of thebedframe, and thus tospring and curve the rails in, to cause the saws tocurve the edges of the staves proportionately to the width of thestaves, the arrangement being such that the 0 rails curve in proportionto the distance the saws swing apart, and straighten as they swingtoward each other. By shifting the links t up and down in the slots 0the curves may be made greater or less, accordingto the required 5 bulgeof the barrel.

The saws are geared with belts d and pulleys c, with driving-pulleys fon the main shaft g, having the fast and loose pulleys h, for applyingthe power to the machine, said belts d passing over tightening-pulleyst" on a rock-arm, j, pivoted to the frame at k, and

having a weight, t, cord m, and pulley a, to bear the pulleys 01 withthe requisite force against the belts d/ to maintain their tension andfor driving the saws, while allowing the (.lll'llfig'GS to traverse therails m, for carrying the saws to and fro along the slaves. For causingthe saw-carriages k to thus traverse the rails m along the stares, themain shaft has a cone-pulley, 11', from which a belt, q, runs onto acone-pulley, s, on a counter-shaft, t, which has a couple of spools, a,from which straps to extend over guide-pulleys a to the carriages 7c andconnect with them, so that by the winding of the straps 20' upon thespools the carriages will be drawn forward, and when said spools aredisconnected from the driving-gear the roelearm y" and the we ght I andcord m will draw the carriages back.

To disconnect the counter-shaft from the cone-pulley .5 and allow thecarriages to be drawn back, said pulley s is fitted loosely on thecountershaft t,and a clutcl1.m",a11d a shifting-lever, y, are providedfor connecting and disconnecting it.

The clutch-level 1 is to be shifted by hand for connecting thecone-pulley s and starting thecarriages; but in practireitisto betrippedby an attachment on one of the. saw-carriages adapted to touch and pushit over at the 1110- ment the saws cut through the stares at the ends.

The pawls b are so arranged on the levers u. that the operator candetach them from the racks c with his foot at the same time that heworks the levers with his foot, and they have a spring, a, to re-engagethem with the racks. The pull of the spring-rails m on the links t tendsto swing the bed-frames. upward, or against the downward pull of thelevers a, so that for the upward shift of the lovers (1 the operator hasonly to detach the pawl and allow the lever to rise to the properposition, and then let the pawl engage with the rack. For shifting theother way, he merely presses the lever down, allowing the pawl to shiftalong the teeth of the rack, with which it engages whenever the leverstops.

Having thus fully described. my invention, I claim asnew and desire tosecure by Letters Patent- 1. In astave-jointing machine, thecombinalion, with the stave-holding bed. of the sawcarriage supportingand guiding rails about centrally connected to the pivotally-supportedbed-frame, and adapted to be sprung in the desired curvature for theedges of the staves, and to automatically assume upon the removal of theforce applied to curve or; spring them their normal position,substantially as and for 'iJJG purpose set forth.

2. In ast-ave-jointing machine, the combination, with the stave-holdingbed, of the sawcarriages traveling upon rails adapted to be sprung inthe desired curvature for the edges of the staves, and movably connectedto. the

pivoted bed-frame, substantially as and for the purpose set forth.

3. in astave-jointingmachine, l'liecolnbination, with the stave-holdingbed, of the saw carriages with their guide and supporting rails adaptedto be sprung in the desired curvature for the edges of the staves, saidrails also being inovably connected to the bedframes, the bed-framesbeing pivoted upon a common axis. and the nieansoi" connection betweenthe rails and the bed-frame being ad i ustabl y connected to thesupporting uprights,

substantially as and for the purpose set forth.

4. In a stave-jointing machine, the combination, with the stave-holdingbed, of the sawcarriages with their supporting and guiding rails adaptedto be sprung in the desired curva ture forthe staveasaid rails beingmovablyconnectcd to the bed-frames, the bed-fran'tcs being pivoted upona common axis, the means of connection between the rails and thebedfrai'nes being adjustably connected to the supporting-uprights, andmeans for actuating or swinging the bed-frames, substantially as and forthe purposes set forth.

In a stave-jointing machine, the combination, withthebed-framepivotallyconnected I nation, with the stave-holding bed. ofthe saw carriages with their supporting and guide rails adapted to besprung in the desired curvature for the stares, said rails being movablyconnected to the bed-frames and also to the sup porting-uprights, thebed'frames being pivoted upon a common axis, and means fordifferentially shifting the saw-carriage rails and the bed-frames,substantially as and for the purpose set forth.

7. The spring-rails m, connected at the mid dle to the bed a, andconnected at the ends to the bars 1). adiustably supported on the endsof the bed-frame and connected by. links t with the uprights a, said bedn being adjustably pivoted on the shaft to, and the saw-carriage isbeing arranged on the spriug'rails and inrelation to the stave-bed 0,substantially as described.

8. In a stavejointing machine, thecombination, with the bed-framepivotally connected to its support. of the saw-carriage railsadaptcd tobe sprung in the desired curvature for the staves, and connected by barshaving slots which receive studs projecting from the bedframe, the linksconnecting the slotted bars to adjusting-pins arranged in curved slotsinthe su pporting-uprights, and rods or bars connecting the bed-framewith. foot-levers, substantially as and for the purpose set forth.

9. The combination, with the saw-carriage,

of the pivoted springdog fand. the rod j,

having the angle Z, adapted to engage with the ICO end of the earriage.substantially as and for riages, the driving-pulleyf, belt d, passed IOthe purpose set forth. against pulleys vi of the rock-arms j, having 10.The combination, with the reciproeatthe weighted strap m, and startingand stoping saw-carriages is, carrying the saws, 0f the ping mechanism,substantially as and for the 5 cone-pulleys p s, the belt q,encompassing purpose set forth. K

said pulleys, the spools u 00', one set being ar- W'ILLARD FRANKVVELLMAN. ranged on the shaft of the pulley s, the straps Witnesses: w,connected to spools a, thence passed over AROHIBALD NICHOLSON,

vthe spool 02, and connected to said saw-citr- JosEPH XVILLTAMsON.

